<li class="layui-nav-item">
    <a href="javascript:void(0);" style="padding-left: 0;">+新增</a>
    <dl class="layui-nav-child">
        <dd><a onclick="yunj.openPopup('{:url(\'demo/user_demo.index/add\')}','新增用户')">新增用户-自动宽高</a></dd>
        <dd><a onclick="yunj.openPopup('{:url(\'demo/user_demo.index/add\')}','新增用户',false,500,400)">新增用户-指定宽高</a></dd>
        <dd><a onclick="yunj.openTab('{:url(\'demo/user_demo.index/add\')}','新增用户')">新增用户-tab打开</a></dd>
    </dl>
</li>